ESXi 6.0 - Some VMs have black screen under "Console"

[cschneer]

Just as the title says. This happens to some, but not all of my servers.

I tried increasing video memory to 32mb on one of the affected servers and now none of them will console. I have to reboot the host during downtime but won't be able to do it for a while (single production host)

Any advice would be appreciated.

[NathanosBlightc]

Does it happen in the vSphere client or web client?

Did you install a specific hardware VGA in the ESXi host or it works with an onboard VGA?

[KabirAli82]

What happens when you tap somewhere in the console screen and hit the shift button (or any other button)?